wifi: rtw89: rfk: add H2C command to trigger TXGAPK

TXGAPK stands for TX power gap calibration. Use this calibration to
compensate TX power gap to output expected power.
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://msgid.link/20240202030642.108385-8-pkshih@realtek.com

drivers/net/wireless/realtek/rtw89/fw.c

@@ -4671,6 +4671,50 @@ int rtw89_fw_h2c_rf_dpk(struct rtw89_dev *rtwdev, enum rtw89_phy_idx phy_idx)
 	return ret;
 }
 
+int rtw89_fw_h2c_rf_txgapk(struct rtw89_dev *rtwdev, enum rtw89_phy_idx phy_idx)
+{
+	const struct rtw89_chan *chan = rtw89_chan_get(rtwdev,
+						       RTW89_SUB_ENTITY_0);
+	struct rtw89_hal *hal = &rtwdev->hal;
+	struct rtw89_h2c_rf_txgapk *h2c;
+	u32 len = sizeof(*h2c);
+	struct sk_buff *skb;
+	int ret;
+
+	skb = rtw89_fw_h2c_alloc_skb_with_hdr(rtwdev, len);
+	if (!skb) {
+		rtw89_err(rtwdev, "failed to alloc skb for h2c RF TXGAPK\n");
+		return -ENOMEM;
+	}
+	skb_put(skb, len);
+	h2c = (struct rtw89_h2c_rf_txgapk *)skb->data;
+
+	h2c->len = len;
+	h2c->ktype = 2;
+	h2c->phy = phy_idx;
+	h2c->kpath = RF_AB;
+	h2c->band = chan->band_type;
+	h2c->bw = chan->band_width;
+	h2c->ch = chan->channel;
+	h2c->cv = hal->cv;
+
+	rtw89_h2c_pkt_set_hdr(rtwdev, skb, FWCMD_TYPE_H2C,
+			      H2C_CAT_OUTSRC, H2C_CL_OUTSRC_RF_FW_RFK,
+			      H2C_FUNC_RFK_TXGAPK_OFFLOAD, 0, 0, len);
+
+	ret = rtw89_h2c_tx(rtwdev, skb, false);
+	if (ret) {
+		rtw89_err(rtwdev, "failed to send h2c\n");
+		goto fail;
+	}
+
+	return 0;
+fail:
+	dev_kfree_skb_any(skb);
+
+	return ret;
+}
+
 int rtw89_fw_h2c_rf_dack(struct rtw89_dev *rtwdev, enum rtw89_phy_idx phy_idx)
 {
 	struct rtw89_h2c_rf_dack *h2c;

drivers/net/wireless/realtek/rtw89/fw.h

@@ -3937,6 +3937,7 @@ enum rtw89_mcc_h2c_func {
 enum rtw89_rfk_offload_h2c_func {
 	H2C_FUNC_RFK_IQK_OFFLOAD = 0x1,
 	H2C_FUNC_RFK_DPK_OFFLOAD = 0x3,
+	H2C_FUNC_RFK_TXGAPK_OFFLOAD = 0x4,
 	H2C_FUNC_RFK_DACK_OFFLOAD = 0x5,
 	H2C_FUNC_RFK_RXDCK_OFFLOAD = 0x6,
 	H2C_FUNC_RFK_PRE_NOTIFY = 0x8,
@@ -4002,6 +4003,17 @@ struct rtw89_h2c_rf_dpk {
 	u8 dpk_dbg_en;
 } __packed;
 
+struct rtw89_h2c_rf_txgapk {
+	u8 len;
+	u8 ktype;
+	u8 phy;
+	u8 kpath;
+	u8 band;
+	u8 bw;
+	u8 ch;
+	u8 cv;
+} __packed;
+
 struct rtw89_h2c_rf_dack {
 	__le32 len;
 	__le32 phy;
@@ -4208,6 +4220,7 @@ int rtw89_fw_h2c_rf_pre_ntfy(struct rtw89_dev *rtwdev,
 			     enum rtw89_phy_idx phy_idx);
 int rtw89_fw_h2c_rf_iqk(struct rtw89_dev *rtwdev, enum rtw89_phy_idx phy_idx);
 int rtw89_fw_h2c_rf_dpk(struct rtw89_dev *rtwdev, enum rtw89_phy_idx phy_idx);
+int rtw89_fw_h2c_rf_txgapk(struct rtw89_dev *rtwdev, enum rtw89_phy_idx phy_idx);
 int rtw89_fw_h2c_rf_dack(struct rtw89_dev *rtwdev, enum rtw89_phy_idx phy_idx);
 int rtw89_fw_h2c_rf_rxdck(struct rtw89_dev *rtwdev, enum rtw89_phy_idx phy_idx);
 int rtw89_fw_h2c_raw_with_hdr(struct rtw89_dev *rtwdev,